A 2 W carbon resistor is color coded with green, black, red and brown respectively. The maximum current which can be passed through this resistor is :

Question

A 2 W carbon resistor is color coded with green, black, red and brown respectively. The maximum current which can be passed through this resistor is : (A) 63 mA (B) 0.4 mA (C) 100 mA (D) 20 mA

Tardigrade Admin · Accepted Answer

P = i2R. ∴ for imax, R must be minimum from color coding R = 50 × 102 Ω ∴ imax = 20 mA

Q. A $2 W$ carbon resistor is color coded with green, black, red and brown respectively. The maximum current which can be passed through this resistor is :

63 mA

0.4 mA

100 mA

20 mA

$P = i^{2} R$ .
$∴$ for $i_{ma x}$ , R must be minimum from color coding $R = 50 \times 1 0^{2} Ω$
$∴ i_{ma x} = 20 m A$

Q. A 2W carbon resistor is color coded with green, black, red and brown respectively. The maximum current which can be passed through this resistor is :