Pick out the wrong statement.
- AIn a simple battery circuit,the point of lowest potential is the negative terminal of the battery.
- BThe resistance of an incandescent lamp is greater when the lamp is switched off.
- CAn ordinary $100\, W$ lamp has less resistance than a $60\, W$ lamp.
- DAt constant voltage,the heat developed in a uniform wire varies inversely as the length of the wire used.
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$A$ galvanometer $(G)$ of $2 \ \Omega$ resistance is connected in the given circuit. The ratio of charge in $C_1$ $(4 \ \mu F)$ and $C_2$ $(6 \ \mu F)$ is:
DifficultJEE MAIN 2024
View SolutionIdentify the correctness of the following statements:
$(1)$ The product of a volt and a coulomb is a joule.
$(2)$ The product of a volt and an ampere is a joule/second.
$(3)$ The product of a volt and a watt is a horsepower.
$(4)$ $A$ watt-hour can be measured in terms of an electron volt.
$(1)$ The product of a volt and a coulomb is a joule.
$(2)$ The product of a volt and an ampere is a joule/second.
$(3)$ The product of a volt and a watt is a horsepower.
$(4)$ $A$ watt-hour can be measured in terms of an electron volt.
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View SolutionThe net current flowing in the given circuit is . . . . . . $\text{A}$.
$A$ copper voltameter is connected in parallel with a heater coil of resistance $0.1\,\Omega$. $A$ current is passed for $20\,\text{minutes}$,resulting in the deposition of $0.99\,\text{g}$ of copper on the cathode. If the electrochemical equivalent of copper is $0.00033\,\text{g/C}$,the heat produced in the coil is ........... $J$.
Difficult
View SolutionMatch the following two columns:
Column-$I$ Column-$II$ $(A)$ Electrical resistance $(P)$ $M^1 L^3 T^{-3} A^{-2}$ $(B)$ Electrical potential $(Q)$ $M^1 L^2 T^{-3} A^{-2}$ $(C)$ Specific resistance $(R)$ $M^1 L^2 T^{-3} A^{-1}$ $(D)$ Specific conductance $(S)$ None of these
| Column-$I$ | Column-$II$ |
| $(A)$ Electrical resistance | $(P)$ $M^1 L^3 T^{-3} A^{-2}$ |
| $(B)$ Electrical potential | $(Q)$ $M^1 L^2 T^{-3} A^{-2}$ |
| $(C)$ Specific resistance | $(R)$ $M^1 L^2 T^{-3} A^{-1}$ |
| $(D)$ Specific conductance | $(S)$ None of these |
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