Resistances and Resistors

Q. A uniform metallic wire has a resistance of $18\Omega$ and is bent into an equilateral triangle. Then, the resistance between any two vertices of the triangle is

1. $2\Omega$
2. $4\Omega$
3. $12\Omega$
4. $8\Omega$

Q. A uniform wire of resistance $72\Omega$ is bent in the form of a hexagon (regular), then the effective resistance between A & B is

1. $10\Omega$
2. $6\Omega$
3. $8\Omega$
4. $9\Omega$

Q. A uniform wire of resistance $72\Omega$ is bent in the form of a hexagon (regular), then the effective resistance between A & B is

1. $8\Omega$
2. $10\Omega$
3. $6\Omega$
4. $9\Omega$

Q. A uniform wire of resistance $72\Omega$ is bent in the form of a hexagon (regular), then the effective resistance between A & B is

1. $10\Omega$
2. $6\Omega$
3. $8\Omega$
4. $9\Omega$

Q. A uniform wire of resistance $72\Omega$ is bent in the form of a hexagon (regular), then the effective resistance between A & B is

1. $10\Omega$
2. $6\Omega$
3. $8\Omega$
4. $9\Omega$

Q. An inductor ($L=100mH$), a resistor ($R=100\Omega$ ) and a battery ($E=100V$) are initially connected in series as shown in the figure. After a long time the battery is disconnected after short circuiting the points A and B. The current in the circuit $1ms$ after the circuit is switched on is

1. $e^{-1}A$
2. $1A$
3. $0.1A$
4. $eA$

Q. A conductor has a resistance $5\Omega$ at ${50}^{\circ }C$ and $6\Omega$ at ${100}^{\circ }C$. Find its resistance at $0^{\circ }C$.

1. $4\Omega$
2. $3\Omega$
3. $2\Omega$
4. $1\Omega$