An electric circuit is given below. $V_1 = 1 V$ and Resistance $R = 1000 \Omega$.
The current through the resistance $R$ is very close to $1$ mA and the voltage across point A and B, $V_{AB} = 1 V$. Now the circuit is changed to :
where value of $V_2 = 5 V$. The internal resistances of both the batteries are $0.1 \Omega$. The current through the resistance $R$ is about :
$1.0$ mA
$1.2$ mA
$3.0$ mA
$5.0$ mA
If the current through an electrical machine running on direct current is $15 A$ and the machine runs for $10$ minutes, the charge that passes through the machine during this time is:
$1.50 C$
$150 C$
$900 C$
$9000 C$
Which one of the following is the best shape of a solid metal rod to form the top end of a lightning conductor?
Which of the following forces is/are fundamental in nature?
1. Gravitational force
2. Electromagnetic forces
3. Strong and weak nuclear forces
Select the correct answer using the code given below :
1 only
1 and 2 only
2 and 3 only
1, 2 and 3