Power (ELECTRIC CURRENT) Question (a) A 200 and a 300 resistor are in series. Ea

Question

Power (ELECTRIC CURRENT) Question
(a) A 200 and a 300 resistor are in series. Each of them has a power rating of 1 W, not to be exceeded. What is the maximum potential difference you can apply across the series combination?
(b) The same resistors as in (a) are now in parallel. What is the maximum potential difference permissible now?
Power (ELECTRIC CURRENT) Question
(a) A 200 and a 300 resistor are in series. Each of them has a power rating of 1 W, not to be exceeded. What is the maximum potential difference you can apply across the series combination?
(b) The same resistors as in (a) are now in parallel. What is the maximum potential difference permissible now?
Power (ELECTRIC CURRENT) Question
(a) A 200 and a 300 resistor are in series. Each of them has a power rating of 1 W, not to be exceeded. What is the maximum potential difference you can apply across the series combination?
(b) The same resistors as in (a) are now in parallel. What is the maximum potential difference permissible now?

Explanation / Answer

1) for 1 W power , as more power will be dissipated in 300 W

let the maximum current is I

Power = I^2 * R

1 = I^2 * 300

solving for I

I = 0.058 A

Now, for the potential difference ,

V = (Req) * I

V = (200 + 300) * 0.058

V = 28.7 V

the potential difference is 28.7 V

b)

Now , in parallel , maximum power will be across 200 Ohm

P = V^2/R

1 = V^2/200

V = 14.14 V

the maximum potential is 14.14 V

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.