Advertisements
Advertisements
प्रश्न
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.
Advertisements
उत्तर
Given,
Power of geyser, P = 1500 W
Voltage, V = 250 V
- Current, I = `"P"/"V"`
I = `1500/250`
= 6 A - Time, t = 50 h
Energy, E = P × t
= 1500 × 50
= 75000 Wh
= 75 kWh - Cost per unit of energy = Rs 4.20
Cost for 75 kWh of energy = 4.20 × 75
= ₹ 315
APPEARS IN
संबंधित प्रश्न
One coulomb charge is equivalent to the charge contained in:
(a) 2.6 × 1019 electrons
(b) 6.2 × 1019 electrons
(c) 2.65 × 1018 electrons
(d) 6.25 × 1018 electrons
If 20 C of charge pass a point in a circuit in 1 s, what current is flowing?
A current of 4 A flows around a circuit for 10 s. How much charge flows past a point in the circuit in this time?
Fill in the folloing blank with suitable words:
Current is measured in ............... using an ............... placed in ............... in a circuit.
What is an Ammeter? How is It Connected in a Circuit? Draw a Diagram to Illustrate Your Answer.
The work done in moving unit positive charge across two points in an electric circuit is a measure of
Electrical appliances have voltage and power ratings as listed below. Which
has the larger working resistance?
| Appliances | Voltage (V) | Power (W) |
| (a) Washing machine | 250 | 3000 |
| ( b) Television | 240 | 160 |
| (c)240 | 240 | 1500 |
| ( d) Hair curler | 250 | 20 |
| ( e) Car head lamp | 12 | 36 |
State the conditions for the flow of charge in a circuit from one point to the other.
1020 electrons, each having a charge of 1.6 x 10-19 C, flows in a circuit V is 0.1s. What is the current in ampere?
