Question 1 :
A storage cell is charged by $5$ amp d.c. for $18$ hours.Its strength after charging will be

Question 2 :
What is the total resistance when four resistors of $20, 40, 60$, and $80$ respectively are connected in parallel (in ohm)?

Question 4 :
Assertion(A) : The e.m.f of the cell in secondary circuit must be less than e.m.f of cell in primary circuit in potentiometer.<br/>Reason (R): Balancing length cannot be more than length of potentiometer wire.<br/>

Question 5 :
The potential gradients on the potentiometer wire are$V_{1}$ and&#160;$V_{2}$&#160;with an ideal cell and a real cell of same emf in the primary circuit then<br/>

Question 6 :
A constant voltage power source is connected to a resistor in an electric circuit .The resistance is increased by four times. Identify the changes in voltage of power source .

Question 7 :
What potential difference is needed between the hands for a lethal shock current?<br>

Question 10 :
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:<br>

Question 11 :
Two heater coils separately take $10$ minute and $5$ minute to boil certain amount of water. If both the coils are connected in series, the time taken will be

Question 12 :
In a potentiometer experiment, it is found that no current passes through the galvanometer when the terminals of the cell are connected across $52$cm of the potentiometer wire. If the cell is shunted by a resistance of $5\Omega$, a balance is found when the cell is connected across $40$cm of the wire. Find the internal resistance of the cell.

Question 13 :
A cell of emf $E$ is connected to a resistance ${R}_{1}$ for time $t$ and the amount of heat generated in it is $H$. If the resistance ${R}_{1}$ is replaced by another resistance ${R}_{2}$ and is connected to the cell for the same time $t$, the amount of heat generated in ${R}_{2}$ is $4H$. Then internal resistance of the cell is:

Question 14 :
Three unequal resistance are connected in parallel. Two of these resistances are in the ratio $1 : 2$. The equivalent resistance of these three connected in parallel is $1\Omega$. What is the highest resistance value among these three resistances if no resistance is fractional?

Question 15 :
A dynamo develops $0.5 A$ at $6 V$, the power delivered is ______.