Advertisements
Advertisements
Question
Name two devices which work on the heating effect of electric current.
Advertisements
Solution
The two devices that work on the heating effect of electric current are a bulb and an electric fuse.
APPEARS IN
RELATED QUESTIONS
Fill in the folloing blank with suitable words:
A current is a flow of ............... .For this to happen there must be a ............... circuit.
An electric circuit consisting of a 0.5 m long nichrome wire XY, an ammeter, a voltmeter, four cells of 1.5 V each and a plug key was set up.
Following graph was plotted between V and I values:
What would be the values of `V/I` rations when the potential difference is 0.8 V, 1.2 V and 1.6 V respectively?
What conclusion do you draw from these values?
What is the resistance of the wire?
A battery of 9 V is connected in series with resistors of 0.2 Ω, 0.3 Ω, 0.4 Ω, 0.5 Ω and 0.12 Ω. How much current would flow through the 12 Ω resistor?
What happens to the other bulbs in a parallel circuit if one bulb blows off?
Which is the better way to connect lights and other electrical appliances in domestic wiring: series circuits or parallel circuits? why?
An electrician has wired a house in such a way that if a lamp gets fused in one room of the house, all the lamps in other rooms of the house stop working. What is the defect in the wiring?
If a charge of 420 C flows through a conducting wire in 5 minutes what is the value of the current?
An electric current flowing in a wire creates ______ around the wire.
What is international convention of colour coding in a cable?
The circuit diagram (Fig.) shows a battery of e.m.f. 6 volts and internal
resistance of 0.8 Ω oonnected in series. Find the
(a) Current reoorded by the ammeter,
(b) P.d. across the terminals of the resistor B,
( c) Current passing through each of the resistors B, C and D, and
( d) P.d. across the terminals of the battery.
Explain with the help of a diagram how does 'short circuiting' occur in an electric kettle.
Complete the following:
1 kWh = _________ J
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.
Three resistances, of which two are equal when connected in series have an effective resistance of 30 ohms. When the three resistances are connected in parallel, the effective resistances is 3 ohms. Find the values of the individual resistances.
Name any two devices, which are working on the heating effect of the electric current.
The flow of electric charge per unit time is called potential difference.
Problems for practice:
If 5A current flows through a circuit, then convert the current in terms of microampere?
