The resistance in left and right gap of a meter bridge are 20Ω and 30Ω, respectively. When the resistance in the left gap is reduced to half its value, then balance point shifts by

Question:

Options :

a) 15cm to right
b) 15 cm to the left
c) 20 cm to right
d) 20 cm to left

Answer :

b) 15 cm to the left

Answer Steps :

Step:-1

Step:-2

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An alternating voltage source is connected in series with a resistance R and an inductance L. If the potential drop across the resistance is 200 V and across the inductance is 150 V, then the applied voltage is:

In an a. c. circuit the instantaneous current and e.m.f. are represented as: I = I0 sin(ωt – π/6) and E = E0 sin(ωt + π /3) respectively. The voltage leads the current by

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