How is a voltmeter connected in the circuit to measure potential difference between two points?
Three capacitors each of capacitance 9 pF are connected in series. What is the potential difference across each capacitor if the combination is connected to a 120 V supply?
A resistance of 900 ohm is connected in series with a galvanometer of resistance 100 ohm. A potential difference of 1 V produces a deflection of 100 division in the galvanometer. Find the figure of merit of galvanometer.
Inductive resistance 25 ohm and capacitive resistance 75 ohm are connected across 250 V mains in series. Find the r.m.s. potential difference across inductor and capacitor.
The potentiometer consists of a wire of length 4 m and resistance of 10Omega . It is connected to a cell of e.m.f. 2 V. The potential difference per unti length of the wire will be
