English

A Battery and Three Lamps Are Connected as Shown: - Science

Advertisements
Advertisements

Question

A battery and three lamps are connected as shown: 

 

Which of the following statements about the currents at X, Y and Z is correct?
(a) The current at Z is greater than that at Y.
(b) The current at Y is greater than that at Z.
(c) The current at X equals the current at Y.
(d) The current at X equals the current at Z. 

 

Advertisements

Solution

(b) The current at Y is greater than that at Z.
This is so because Y alone will offer less resistance.

shaalaa.com
  Is there an error in this question or solution?
Chapter 1: Electricity - Exercise 5

APPEARS IN

Lakhmir Singh Physics (Science) [English] Class 10
Chapter 1 Electricity
Exercise 5 | Q 40

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

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


By what name is the physical quantity coulomb/second called?


In which direction do electrons flow?


What is the conventional direction of the flow of electric current? How does it differ from the direction of flow electrons?


Which statement/statement is/are correct?
1. An ammeter is connected in series in a circuit and a voltmeter is connected in parallel.
2. An ammeter has a high resistance.
3. A voltmeter has a low resistance.

(a) 1, 2, 3
(b) 1, 2
(c) 2, 3
(d) 1


What happens to the other bulbs in a parallel circuit if one bulb blows off?


 Christmas tree lamps are usually wired in series. What happens if one lamps breaks?


Draw a circuit diagram showing two electric lamps connected in parallel together with a cell and a switch that works both lamps. Mark an â’¶ on your diagram to show where an ammeter should be placed to measure the current.


Which effect of current is utilised in an electric light bulb?


An electric bulb is rated at 220 V, 100 W. What is its resistance? What maximum current can be passed through it?

How does an alternating current differ from the direct current?

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?


Tick (✓) the correct choice among the following :

In fig .XY is at right angles to the magnetic field. The direction in
which XY should be moved to induce an electron flow in the direction Y to X as indicated by the arrow is


An electric bulb is marked 100 W, 250 V. How much current will the bulb draw if connected to a 250 V supply?


Give the electric current unit.


The power of an electric device is a product of ______ and ______.


Which of the following represents voltage?


Match the following:

1. 1 mA a. series
2. 1 pA b. ohmmeter
3. Ammeter  c. 10-6 ampere
4. Electrical resistivity d. 10-3 ampere

The number of electrons constituting a 1-coulomb charge is ______.


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?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×