A Zener diode is connected to a battery and a load as shown below: The currents I, IZ and IL are respectively (a) 15 mA, 5 mA, 10 mA (b) 15 mA, 7.5 mA, 7.5 mA (c) 12.5 mA, 5 mA, 7.5 mA (d) 12.5 mA, 7.5 mA, 5 mA

Answer: (d). Without the Zener the load gets 60 × 2/6 = 20 V > 10 V, so the Zener holds 10 V. I = (60 - 10)/(4 kΩ) = 12.5 mA IL = (10)/(2 kΩ) = 5 mA, IZ = 12.5 - 5 = 7.5 mA So the answer is (d) 12.5 mA, 7.5 mA, 5 mA.

A Zener diode is connected to a battery and a load as shown below… | JEE Main 2014 (11 Apr, Shift 1)

Q90JEE Main 2014 · 11 APR · SHIFT 1Medium

Special Purpose Diodes

A Zener diode is connected to a battery and a load as shown below:

The currents I, IZ and IL are respectively

Show answer and solution

Answer: (d)

Without the Zener the load gets $60 \times \frac{2}{6} = 20$ V $> 10$ V, so the Zener holds $10$ V.
$I = \frac{60 - 10}{4\text{ k}\Omega} = 12.5$ mA
$I_L = \frac{10}{2\text{ k}\Omega} = 5$ mA, $I_Z = 12.5 - 5 = 7.5$ mA
So the answer is (d) $12.5$ mA, $7.5$ mA, $5$ mA.

Report a mistake

Special Purpose Diodes question from JEE Main 2014 (11 Apr, Shift 1)

More questions on Special Purpose Diodes