Advertisements
Advertisements
Question
A 200 v electric transfer draws an electric current of 11 A. What is its electrical resistance?
Numerical
Solution
AIC to Ohm's law;
V=IR
Here, V = 200 volt and I= 11 A
R = `"V"/"I" = 200/11 = 18.2 Omega`
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Which particles constitute the electric current in a metallic conductor?
Draw a circuit diagram to show how two 4 V electric lamps can be lit brightly from two 2 V cells.
State three factors on which the heat produced by an electric current depends. How does it depend on these factors?
Name the physical quantity which defines the rate of flow of charge.
What do you mean by A.C.?
State two important precautions you should observe while using electricity?
Three fuses available are rated at 2 A, 10 A and 13 A. Which fuse would you chose for an electric wire rated at 3 kW, 250 V? Show how you arrived at your answer.
A geyser is rated 1500 W, 250 V. This geyser is connected to 250 V mains. Calculate:
- The current drawn,
- The energy consumed in 50 hours, and
- The cost of energy consumed at ₹ 4.20 per kWh.
Match the items in column-I to the items in column-II:
Column - I | Column - II | ||
(i) | electric current | (a) | volt |
(ii) | potential difference | (b) | ohm meter |
(iii) | specific resistance | (c) | watt |
(iv) | electrical power | (d) | joule |
(v) | electrical energy | (e) | ampere |
Which of the following represents voltage?