When a resistor of resistance R is connected across a.c. the terminal p.d. of the cell is reduced to three-quart its e.m.f. The cell’s internal resistance in terms of R is

Similar Questions

In which of the following devices is the principle of photoelectric effect not applicable? ...

When an astronomical telescope is in normal adjustment, the focal length of the objective lens is 50...

An organic pipe closed at one end is 80cm long. Determine the frequency of the fundamental note assu...

Two magnets are used to magnetize a soft iron bar PQ as illustrated in the diagram given. The correc...

The capacitance of a parallel-plate capacitor is increased by making the area of the plates ...

Two bodies of masses 3.0 kg and 2.0 kg are separated by a distance of 50 cm. Calculate the force of ...

Which of the following statements about parallel plate capacitors is/are correct? I. Capacitance of...

The value of F in the figure above when in equilibrium is ...

The resultant force of a couple is ………? ...

The half-life of a radioactive substance is 2 seconds. Calculate the decay constant ...