Assertion: Silver has resistivity 1.60 × 10^-8 ohm metre at 20°C.
Reason: Silver has resistivity 1.60 × 10^-6 ohm metre at 20°C.
Assertion: Silver has resistivity 1.60 × 10^-8 ohm metre at 20°C.
Reason: Silver has resistivity 1.60 × 10^-6 ohm metre at 20°C.
Assertion: Bulbs are usually filled with chemically inactive nitrogen and argon gases.
Reason: One volt equals one joule per coulomb.
Assertion: Bulbs are usually filled with chemically inactive nitrogen and argon gases.
Reason: One volt equals one joule per coulomb.
Assertion: Heat produced in a resistor is H = VIt.
Reason: One milliampere equals 10^-3 ampere.
Assertion: Heat produced in a resistor is H = VIt.
Reason: One milliampere equals 10^-3 ampere.
Assertion: Manganese has resistivity 1.84 × 10^-6 ohm metre at 20°C.
Reason: A rheostat is used to change resistance in a circuit.
Assertion: Manganese has resistivity 1.84 × 10^-6 ohm metre at 20°C.
Reason: A rheostat is used to change resistance in a circuit.
Assertion: Electric power is the rate of doing work or rate of energy consumption.
Reason: A rheostat is used to change resistance in a circuit.
Assertion: Electric power is the rate of doing work or rate of energy consumption.
Reason: A rheostat is used to change resistance in a circuit.
Assertion: Potential difference is work done per unit charge.
Reason: One volt equals one joule per coulomb.
Assertion: Potential difference is work done per unit charge.
Reason: One volt equals one joule per coulomb.
Assertion: An electric circuit requires an open path for continuous current.
Reason: A fuse wire melts when excessive current raises its temperature.
Assertion: An electric circuit requires an open path for continuous current.
Reason: A fuse wire melts when excessive current raises its temperature.
Assertion: In series, the total potential difference equals the sum of individual potential differences.
Reason: In series, the total potential difference is the difference of individual potential differences.
Assertion: In series, the total potential difference equals the sum of individual potential differences.
Reason: In series, the total potential difference is the difference of individual potential differences.
Assertion: Series equivalent resistance is greater than any individual resistance.
Reason: Series equivalent resistance is lower than every individual resistance.
Assertion: Series equivalent resistance is greater than any individual resistance.
Reason: Series equivalent resistance is lower than every individual resistance.
Assertion: Rubber and glass have very high resistivity.
Reason: Rubber and glass have very low resistivity.
Assertion: Rubber and glass have very high resistivity.
Reason: Rubber and glass have very low resistivity.
Assertion: A conductor with low resistivity is generally a good conductor.
Reason: Low resistivity means the material offers relatively easy charge flow.
Assertion: A conductor with low resistivity is generally a good conductor.
Reason: Low resistivity means the material offers relatively easy charge flow.
Assertion: The SI unit of electric charge is coulomb.
Reason: The SI unit of electric charge is ampere.
Assertion: The SI unit of electric charge is coulomb.
Reason: The SI unit of electric charge is ampere.
Assertion: The equivalent resistance in series equals the sum of individual resistances.
Reason: One milliampere equals 10^-3 ampere.
Assertion: The equivalent resistance in series equals the sum of individual resistances.
Reason: One milliampere equals 10^-3 ampere.
Assertion: Manganin has resistivity 44 × 10^-6 ohm metre at 20°C.
Reason: Manganin has resistivity 44 × 10^-8 ohm metre at 20°C.
Assertion: Manganin has resistivity 44 × 10^-6 ohm metre at 20°C.
Reason: Manganin has resistivity 44 × 10^-8 ohm metre at 20°C.
Assertion: Parallel connection is useful for electrical gadgets with different current requirements.
Reason: A parallel circuit divides the total current among branches.
Assertion: Parallel connection is useful for electrical gadgets with different current requirements.
Reason: A parallel circuit divides the total current among branches.
Assertion: For fixed current and time, doubling resistance doubles heat.
Reason: Joule's law contains resistance as a direct factor.
Assertion: For fixed current and time, doubling resistance doubles heat.
Reason: Joule's law contains resistance as a direct factor.
Assertion: A bulb filament must not melt at its operating temperature.
Reason: The SI unit of potential difference is volt.
Assertion: A bulb filament must not melt at its operating temperature.
Reason: The SI unit of potential difference is volt.
Assertion: The SI unit of potential difference is volt.
Reason: The SI unit of potential difference is ohm.
Assertion: The SI unit of potential difference is volt.
Reason: The SI unit of potential difference is ohm.
Assertion: The equivalent resistance of 30 Ω, 20 Ω and 60 Ω in parallel is 10 Ω.
Reason: For parallel resistors, reciprocal resistances add.
Assertion: The equivalent resistance of 30 Ω, 20 Ω and 60 Ω in parallel is 10 Ω.
Reason: For parallel resistors, reciprocal resistances add.
Assertion: The equivalent resistance of series resistors is their sum.
Reason: The same current flows through every resistor in series.
Assertion: The equivalent resistance of series resistors is their sum.
Reason: The same current flows through every resistor in series.
Assertion: The equivalent resistance in series equals the sum of individual resistances.
Reason: The equivalent resistance in series equals the reciprocal sum of individual resistances.
Assertion: The equivalent resistance in series equals the sum of individual resistances.
Reason: The equivalent resistance in series equals the reciprocal sum of individual resistances.
Assertion: An insulator of the same size offers still higher resistance.
Reason: An insulator of the same size offers lower resistance than a good conductor.
Assertion: An insulator of the same size offers still higher resistance.
Reason: An insulator of the same size offers lower resistance than a good conductor.
Assertion: Resistivity is a characteristic property of the material.
Reason: Resistivity is determined only by the dimensions of a wire.
Assertion: Resistivity is a characteristic property of the material.
Reason: Resistivity is determined only by the dimensions of a wire.
Assertion: Electrical energy is the product of power and time.
Reason: Electrons are not completely free to move within a conductor.
Assertion: Electrical energy is the product of power and time.
Reason: Electrons are not completely free to move within a conductor.
Assertion: Chromium has resistivity 12.9 × 10^-8 ohm metre at 20°C.
Reason: The SI unit of electric charge is coulomb.
Assertion: Chromium has resistivity 12.9 × 10^-8 ohm metre at 20°C.
Reason: The SI unit of electric charge is coulomb.
Assertion: In a series combination, the same current flows through every resistor.
Reason: In a series combination, the current is different through every resistor.
Assertion: In a series combination, the same current flows through every resistor.
Reason: In a series combination, the current is different through every resistor.
Assertion: Positive ions constitute the electron flow in metallic wires.
Reason: Electric power is also P = V^2/R.
Assertion: Positive ions constitute the electron flow in metallic wires.
Reason: Electric power is also P = V^2/R.
Assertion: In series, the total potential difference is the difference of individual potential differences.
Reason: The commercial unit of electrical energy is kilowatt hour.
Assertion: In series, the total potential difference is the difference of individual potential differences.
Reason: The commercial unit of electrical energy is kilowatt hour.
Assertion: In a parallel combination, the potential difference across each resistor is the same.
Reason: In a parallel combination, each resistor has a different potential difference.
Assertion: In a parallel combination, the potential difference across each resistor is the same.
Reason: In a parallel combination, each resistor has a different potential difference.
Assertion: Electric power is also P = I^2R.
Reason: The charge of an electron is 1.6 × 10^-19 C.
Assertion: Electric power is also P = I^2R.
Reason: The charge of an electron is 1.6 × 10^-19 C.