A force of 10N is applied at a distance of 40cm. What is the torque?

A wire is drawn such that its radius changes from r to 2r. The new resistance is:

If the speed of a D.C. shunt motor is increased, the back e.m.f. of the motor will

Electric field intensity (E) at any point in an electric field is equal to

With respect to the radiation pattern of an antenna, which region does the major lobe graze?

When three identical bulbs, each rated at 60 watts and 200 volts, are connected in series to a 200 volt supply, the total power drawn by them will be:

The capacitance and inductance of an overhead transmission line are 0.0075 μF/km and 0.8 mH/km respectively. What is the characteristic impedance of the line?

In India, electricity is supplied for domestic use at 220 volts. It is supplied at 110 volts in the U.S.A. If the resistance of a 60 W bulb for use in India is R, the resistance of a 60 W bulb for use in the U.S.A. will be

Which equation represents the Z parameter model for a 2-port network?

Which of the following statements is correct regarding the solution of Poisson's equation and Laplace's equation in a charge-free medium?