In the given figure, when galvanometer shows no deflection, the current (in ampere) flowing through 5Ω resistance will be
|
(a) 0.5 |
(b) 0.6 |
(c) 0.9 |
(d) 1.5 |
(b) 0.6
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Two capacitors of capacitance 2 μF and 3μF are joined in series. Outer plate first capacitor is at 1000 volt and outer plate of second capacitor is earthed (grounded). Now the potential on inner plate of each capacitor will be
|
(a) 700 Volt |
(b) 200 Volt |
(c) 600 Volt |
(d) 400 Volt |
In the adjoining circuit, the e.m.f. of the cell is 2 volt and the internal resistance is negligible. The resistance of the voltmeter is 80 ohm. The reading of the voltmeter will be
|
(a) 0.80 volt |
(b) 1.60 volt |
(c) 1.33 volt |
(d) 2.00 volt |
In the figure, current through the 3 Ω resistor is 0.8 ampere, then potential drop through 4 Ω resistor is
|
(a) 9.6 V |
(b) 2.6 V |
(c) 4.8 V |
(d) 1.2 V |
If a steady current of 4 amp maintained for 40 minutes, deposits 4.5 gm of zinc at the cathode and then the electro chemical equivalent will be
|
(a) 51 |
(b) 28 |
|
(c) 32 |
(d) 47 |
A conducting ring is placed around the core of an electromagnet as shown in fig. When key K is pressed, the ring
|
(a) Remain stationary |
|
(b) Is attracted towards the electromagnet |
|
(c) Jumps out of the core |
|
(d) None of the above |
