Physics Practice: Current Electricity (Mock Test 2 - Intermediate)
1. A wire of resistance $4\Omega$ is stretched to twice its original length. Its new resistance will be:
2. Two resistors of $6\Omega$ and $3\Omega$ are connected in parallel. Their equivalent resistance is:
3. Internal resistance of a cell is the resistance offered by:
4. The potential difference ($V$) across the terminals of a cell of emf ($\epsilon$) and internal resistance ($r$) when current ($I$) is drawn from it is:
5. Which of the following is an Ohmic conductor?
6. If three identical resistors are first connected in series and then in parallel, the ratio of $R_{series}$ to $R_{parallel}$ is:
7. The amount of heat produced in a conductor is proportional to the ________ of the current.
8. A bulb is rated $100\text{ W, } 220\text{ V}$. Its resistance while glowing is:
9. Which of the following does NOT affect the internal resistance of a cell?
10. Electric power ($P$) can be expressed as: