One metre long metallic wire is broken into two unequal parts P and Q. The part P is uniformly extended into another wire R. Find the ratio of the resistances of P and R and also the ratio of the lengths P and Q.

1 meter long metallic wire is broken into two unequal parts P and Q P part of the wire in uniformly extended into another wire R . Length of R is twice the length of P and the resistance of R is equal to that of Q . Find the ratio of the resistance P and R and also the ratio of the length P and Q

In comparing the resistance of two cells P and Q with a sides wire bridge, a balance point is obtained when the sliding contact is 30 cm from the zero end of the wire. The resistances P and Q are interchanged and the balance is obtained at 120 cm from the same emf. Find the ratio of the resistance P and Q and the length of the bridge wire

The graph of current versus voltage drop across the three resistors P,Q,R is shown above. Find the ratio of their resistances.

There is one metal wire of length l, which is broken in two parts of unequal length. One part is called A and the other, B. When the length of A is stretched to double its length then its resistance becomes equal to that of B. What is the original ratio of length of A to that of B?

Two cylinders P and Q of equal mass are made from the same metal. If the radius of P is n times the radius of Q , then calculate ratio of their resistances.

With resistances P and Q in the left and right gaps of a metre bridge respectively, the null point divides the wire in the ratio 1 : 2 . If P and Q are increased by 20 Omega each, the null point divides the wire in the ratio 3 : 4, then the resistances P and Q are given as :

There are two infinite long parallel straight current carrying wires, A and B separated by a distance r. Figure. The current in each wire is I. The ratio of magnitude of magnetic field at point P and Q when points P and Q lie in the plane of wires is:

P, Q and R are long straight wires in air, carrying currents as shown. The force on Q is directed

A certain money is divided among P,Q and R in the ratio 2:7:9 .The total share of P and Q is equal to that of R . Find the difference between P's and Q's share ?