- ARight hand
- BLeft hand
- CBoth hands
- DElectric tester
Explanation:
We should not touch the electric appliance with bare hands. To check the supply in the circuit, the electric tester should be used.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Three capacitors of 2μF, 3μF and 6μF are joined in series and the combination is charged by means of a 24 volt battery. The potential difference between the plates of the 6 μF capacitor is
|
(a) 4 volt |
(b) 6 volt |
(c) 8 volt |
(d) 10 volt |
Two wires ‘A’ and ‘B’ of the same material have their lengths in the ratio 1 : 2 and radii in the ratio 2 : 1. The two wires are connected in parallel across a battery. The ratio of the heat produced in ‘A’ to the heat produced in ‘B’ for the same time is
|
(a) 1 : 2 |
(b) 2 : 1 |
(c) 1 : 8 |
(d) 8 : 1 |
Sixty-four drops are jointed together to form a bigger drop. If each small drop has a capacitance C, a potential V, and a charge q, then the capacitance of the bigger drop will be
|
(a) C |
(b) 4C |
(c) 16C |
(d) 64C |