Question 1 :
What is the maximum resistance one can make with ten $1 \Omega$ resistors?
Question 2 :
The length of a conductor is doubled and its radius is halved, its specific resistance is
Question 3 :
An electric iron is connected to the 230 V mainssupply. A current of 8 A flows through the iron. How much energy is transferred to the heater eachsecond?
Question 4 :
Two cells of emf's 1.25V and 0.75V having equal internal resistance are connected in parallel. The effective emf is<br>
Question 5 :
Assertion : Material used in the construction ofa standard resistance is constantan or manganin<br>Reason : Temperature coefficients of constantan and Magnanin arevery small<br>
Question 6 :
A cell of emf E is connected across a resistance R. The potential difference between the terminals of the cell is found to be V. The internal resistance of the cellis given as
Question 8 :
A given resistor has the following colour scheme of the various strips on it : Brown, black, green and silver. Its value in ohm is :<br/>
Question 9 :
In our houses all electrical devices operate on 220 V. It implies that
Question 11 :
Assertion : Current is passed through a metallicwire, heating it red. When cold water is pouredon half of it, the rest becomes more hot.<br>Reason : Resistance decreases due to thedecreasein temperature and then current through wireincreases.<br>
Question 12 :
A potential difference V is applied across a copper wire of diameter d and length L. when only d is doubled,the drift velocity :-<br>
Question 13 :
The carbon resistor has three orange bands. The maximum value of resistance offered by the resistor will be __________.
Question 14 :
Two equal resistances are connected in the gaps of a meter bridge. If the resistance in the left gap is increased by $10\%$, the balancing point shift :<br><br>
Question 15 :
When two identical cells are connected either in series or in parallel across 2 ohm resistor they send the same current through it. The internal resistance of each cell is :<br/>
