give me 25 newmaricles of electricity
Answers
1. A wire of length 3 m and area of cross-section 1.7 × 10-6 m2 has a resistance 3 × 10-2 ohm.
a. What is the formula for resistivity of the wire and what is the unit of it
b. Calculate the resistivity of the wire
2. What is (a) the highest, (b) the lowest total resistance that can be secured by combinations of four coils of resistances 4 Ω, 8 Ω, 12 Ω, 24 Ω?
3. There are m resistor each of resistance R. First they all are connected in series and equivalent resistance is X. Now they are connected in parallel and equivalent resistance is Y. What is the ratio of X and Y?
4. An electric bulb draws a current of .8 A and works on 250 V on the average 8 hours a day.
a. Find the power consumed by the bulb
b. If the electric distribution company changes Rs 5 for 6 KWH, what is the monthly bill for 60 days
5. Judge the equivalent resistance when the following are connected in parallel
(a) 1 Ω and 106106 Ω
(b) 1 Ω, 103103 Ω and 106106 Ω.
Hope it helps you.......
Answer:
1. A wire of length 3 m and area of cross-section 1.7 × 10-6 m2 has a resistance 3 × 10-2 ohm.
a. What is the formula for resistivity of the wire and what is the unit of it
b. Calculate the resistivity of the wire
2. What is (a) the highest, (b) the lowest total resistance that can be secured by combinations of four coils of resistances 4 Ω, 8 Ω, 12 Ω, 24 Ω?
3. There are m resistor each of resistance R. First they all are connected in series and equivalent resistance is X. Now they are connected in parallel and equivalent resistance is Y. What is the ratio of X and Y?
4. An electric bulb draws a current of .8 A and works on 250 V on the average 8 hours a day.
a. Find the power consumed by the bulb
b. If the electric distribution company changes Rs 5 for 6 KWH, what is the monthly bill for 60 days
5. Judge the equivalent resistance when the following are connected in parallel
(a) 1 Ω and 106106 Ω
(b) 1 Ω, 103103 Ω and 106106 Ω.
Hope it helps you.......