Current Electri...

Potential difference between the points P and Q in the electric circuit shown is

The current in a simple series circuit is 5.0 amp. When an additional resistance of 2.0 ohm is inserted, the current drops to 4.0 amp. The original resistance of the circuit in ohm was

In a typical Wheatstone network, the resistances in cyclic order are A = 10 Ω, B = 5Ω, C = 4 Ω and D = 4 Ω. For the bridge to be balanced

Thirteen resistances each of resistance R ohm are connected in the circuit as shown in the figure below. The effective resistance between A and B is

An unknown resistance R₁ is connected in series with a resistance of 10 Ω. This combinations is connected to one gap of a metre bridge while a resistance R₂ is connected in the other gap. The balance point is at 50 cm. Now, when the 10 Ω resistance is removed the balance point shifts to 40 cm. The value of R₁ is (in ohm)

A wire has a resistance of 6 Ω It is cut into two parts and both half values are connected in parallel. The new resistance is

Six equal resistances are connected between points P, Q and R as shown in the figure. Then, the net resistance will be maximum between

The total current supplied to the circuit by the battery is

An electric current is passed through a circuit containing two wires of the same material, connected in parallel. If the lengths and radii of the wires are in the ratio of 4/3 and 2/3, then the ratio of the currents passing through the wire will be

If a rod has resistance 4 Ω and if rod is turned as half circle, then the resistance along diameter