The breaking force for a wire is F. What will be the breaking forces for.: (/) two parallel wires of this size and (ii) for a single wire of double thickness?

The breaking force of a wire is F . What will be the breaking force for (i) Two parallel wires of same size and (ii)for a single wire of double thickness ?

The breaking stress of wire dpends on

The breaking stress for a wire of unit cross - sectional is called its

The length of a wire is reduced by half. What will be the effect on the increase in its length under a given load?

Explain why two layer of cloths of equal thickness provide warmer covering than a single layer of double thickness.

Why do two layers of a cloth of equal thickness provide .. warmer covering than a single layer of cloth of double the thickness?

What do you mean by breaking stress? The breaking stress for a metal is 7.8xx10^9 Nm^-2.Calculate the maximum length of the wire made of this metal which may be suspended without breaking. The density of the metal =7.8xx10^3 kg m^-3,g=10ms^-\2'.

The resistance of a Cu wire at 20^@C is 200Omega what is the resistance at 50^@C ?

A wire of given material having length I and area of cross-section A has a resistance of 8Omega . What would be the resistance of another wire of the same material having length l/2 and area of cross-section 4A?