Question

3. [3 points] a) What is the current in a 12-22 toaster with a power output of 1200 W? b) Calculate the voltage needed to produce a current of 5A in a resistance of 40 22. c) A light bulb draws a current of 12A when connected to a 24-V battery. Find the bulb's resistance.

Answer 1

For option a current is 10 Amp, for option b voltage is 200V and for option c resistance is 2 ohm.

Golution R = And Power IP Using Ohm's law, V IR. voltage ; I= currenit ; R = resistance 122 i P (Power ) = 1200 W VI = CIRI = I²R I Р R I (1200 = 10 Amp I= 10 Amp 12 1 (b) V = IR I = 5A ; R = 402 200 V &v=2008 V = 5 x 40 [c] I= 12 A V= 24 V R = 24 12 I = R = 22