English

If the Equivalent Resistance is to Be Increased, Then the Number of Resistances Should Be Connected in - Science and Technology 1

Advertisements
Advertisements

Question

If the equivalent resistance is to be increased, then the number of resistances should be connected in

  1. Series
  2. Parallel
  3. Mixed arrangement
  4. None of the above

Solution

(a) Series.

The effective resistance in series is the sum of individual resistances. So, the resistances should be connected in series in order to increase the effective
resistance.

shaalaa.com
  Is there an error in this question or solution?
2013-2014 (March)

APPEARS IN

RELATED QUESTIONS

In series combination which remains constant?
(a) Voltage
(b) Current
(c) Both current and voltage
(d) Both are variables


A piece of wire of resistance R is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R’, then the ratio `"R"/"R'"` is ______.


When a 4 Ω resistor is connected across the terminals of a 12 V battery, the number of coulombs passing through the resistor per second is:

(a) 0.3
(b) 3
(c) 4
(d) 12


Give the law of combination of resistances in series.


A p.d. of 4 V is applied to two resistors of 6 Ω and 2 Ω connected in series. Calculate:

(a) the combined resistance
(b) the current flowing
(c) the p.d. across the 6 Ω resistor


State how are the two resistors joined with a battery when same current flows in each resistor.


Name the physical quantity that represents the ratio of potential difference and current.

What do you mean by an equivalent resistance?

The potential difference between the terminals of an electric iron is 240 V and the current flowing through it is 6 A. What is the resistance of the electric iron?

What is the value of a resistance if 20 V drives 2 A through it?

What is the equivalent resistance between A and B in the given circuit (Fig?)


How does the resistance of an alloy, vary with temperature?


Bends in a rubber pipe reduce the flow of water through it. How would the bands in a wire affect its electric resistance?


Name the material of wire used for making standard resistances. Give a reason.


Write an expression for the resistance of a conducting wire in terms of its length and area of cross-section.


State and explain the laws of resistance.


Calculate the value of the resistance which must be connected to a 15 ohm resistance to provide on effective resistance of 6 ohm.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×