When a resistor of resistance R is connected across a.c. ...
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
\(\frac{R}{4}\)
\(\frac{R}{3}\)
\(\frac{R}{2}\)
2\(\frac{R}{3}\)
R
Correct answer is A
No explanation has been provided for this answer.
Which of the following phenomena is responsible for the spherical shape of soap bubbles? ...
The quantity of electric charge stored in a capacitor is measured in ...
Which of the following physical quantities is correctly paired with it's corresponding S.I unit?...
How much net work is required to accelerate a 1200 kg car from 10\(ms^{-1}\) to 15\(ms^{-1}\)...