In a metre bridge experiment, resistances are connected as shown in figure. The balancing length l1 is 55 cm. Now an unknown resistance x is connected in series with P and the new balancing length is found to be 75 cm. The value of x is

Question:

Options :

a)54/12 Ω
b)20/11 Ω
c)48/11 Ω
d)11/48Ω

Answer :

c)48/11 Ω

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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