Advertisements
Advertisements
प्रश्न
What happens to the other bulbs in a parallel circuit if one bulb blows off?
Advertisements
उत्तर
When one of the bulbs in a parallel circuit blows off, it does not affect the other bulbs
APPEARS IN
संबंधित प्रश्न
Calculate the number of electrons constituting one coulomb of charge.
What is the Flow of Charge Called?
What actually travels through the wires when you switch on a light?
Which of the following equation shows the correct relationship between electrical unit?
1A = 1C/s or 1c= 1A/s
Which unit could be used to measure current?
(a) Watt
(b) Coulomb
(c) Volt
(d) Ampere
How does the heat H produced by a current passing through a fixed resistance wire depend on magnitude of current I?
Tell the odd one out. Give a proper explanation.
A bulb marked 12 V, 24 W operates on a 12 volt car battery for 20 minutes. Calculate:
(i) The current flowing through it, and
(ii) The energy liberated.
Two cells each having an e.m.f. of 2 V and an internal resistance of 2Ω are
connected (a) In series, and ( b) In para 1le l as shown in fig. . What is the
current flowing through the cir cu it in each_ case?

An electric oven is rated as 1.5 kW, 250 V. If it is connected to a 250 V mains, calculate the
(a) Current drawn,
(b) Energy consumed in 20 hours,
(c) Cost of energy consumed in 20 hours at the rate of Re. 1 per unit.
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 |
A battery of e.m.f. 15 V and internal resistance 2 Ω is connected to two resistors of resistances 4 ohm and 6 ohm joined (a) in series. Find in each case the electrical energy spent per minute in 6 Ω resistor.
An electric kettle is rated 2.5 kW, 250 V. Find the cost of running the kettle for two hours at Rs. 5.40 per unit.
Study the following circuit and find out:
(i) Current in 12 Ω resistor.
(ii) The difference in the readings of A1 and A2, if any.

An electrical gadget can give an electric shock to its user under certain circumstances. Mention any two of these circumstances.
Define the following:
Conventional current
