To convert a galvanometer into a voltmeter, one should connect a
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(a) High resistance in series with galvanometer |
|
(b) Low resistance in series with galvanometer |
|
(c) High resistance in parallel with galvanometer |
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(d) Low resistance in parallel with galvanometer |
(a) High resistance in series with galvanometer
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A 4μF conductor is charged to 400 volts and then its plates are joined through a resistance of 1kΩ. The heat produced in the resistance is
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(a) 0.16 J |
(b) 1.28 J |
(c) 0.64 J |
(d) 0.32 J |
In the following circuit a 10 m long potentiometer wire with resistance 1.2 ohm/m, a resistance R1 and an accumulator of emf 2 V are connected in series. When the emf of thermocouple is 2.4 mV then the deflection in galvanometer is zero. The current supplied by the accumulator will be
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(a) 4 × 10–4 A |
(b) 8 × 10–4 A |
(c) 4 × 10–3 A |
(d) 8 × 10–3 A |
The mass of a particle is 400 times than that of an electron and the charge is double. The particle is accelerated by 5 V. Initially the particle remained in rest, then its final kinetic energy will be
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(a) 5 eV |
(b) 10 eV |
(c) 100 eV |
(d) 2000 eV |
Nuclear binding energy is equivalent to
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(a) Mass of proton |
(b) Mass of neutron |
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(c) Mass of nucleus |
(d) Mass defect of nucleus |
A glass slab is placed in the path of beam of convergent light. The point of convergence of light: