Physics Practice: Current Electricity (Mock Test 5 - Ultimate Comprehensive)
1. In a series circuit, if one bulb blows out, the other bulbs will:
2. The electrical energy consumed by a device is given by $W = P \times t$. If a $50\text{ W}$ bulb is used for $10$ hours, the energy in kWh is:
3. The potential difference across a cell in an open circuit is $3.0\text{ V}$. When a $9\Omega$ resistor is connected, the voltage drops to $2.7\text{ V}$. The internal resistance is:
4. Which of the following is NOT a unit of energy?
5. For two resistors $R_1$ and $R_2$ in parallel, the total resistance $R_p$ is always:
6. The e.m.f. of a cell is $E$ and its internal resistance is $r$. The cell is short-circuited. The current is:
7. A current of $2\text{ A}$ flows through a $5\Omega$ resistor for $2$ minutes. The heat produced is:
8. In a household circuit, all electrical appliances are connected in ________.
9. If the radius of a wire is doubled (material and length same), its resistance becomes:
10. Conductivity is the reciprocal of: