electricity

Will this circuit light the bulb? 

• Yes
• No

Two unequal resistances are connected in parallel.

Which of the following statement is true

• current in same in both

• current is larger in higher resistance

• voltage-drop is same across both

• voltage-drop is lower in lower resistance

You are given n identical wires, each of resistance R.

When these are connected in parallel, the equivalent

resistance is X. When these will be connected in series,

then the equivalent resistance will be

• Xn²

• Xn

• nX

• X/n

A wire of resistance 20 ohm is bent in form of a circle. Find the equivalent resistance between two diametrically opposite ends

• 40 ohm

• 20 ohm

• 10 ohm

• 5 ohm

An example of a voltage source is a _____.

• voltmeter
• battery
• resistance
• switch

A bird perches on a power line that carries current of 160 A . calculate the potential difference between the bird's feet if the resistance of wire is 

 $10\mu\Omega m^{-1}$  and the birds feet are 4 cm apart 

•  $1.6\times10^{-5^{ }}$  volt

•  $6.4\times10^{-5}$  volt

•  $3.2\times10^{-5}$  volt

•  $9.6\times10^{-5}$  volt

calculate current through 6 ohm resistor

• 0.12

• 0.44

• 0.51

• 4.6

you are given 'n' number of

 $100\Omega$  resistor but you  need one of  $10\Omega$  what is the minimum number of 100 ohm resistors required to make one of 10 ohm

• 1

• 10

• 20

• 30

A wire of resistance 20 ohm is bent to form a regular pentagon ABCDE . what will be the resistance between the points A and B

• 16 ohm

• 20 ohm

• 1.6 ohm

• 3.2 ohm

two wires A and B of equal masses and of the same material are taken .the lenght of the wire A is half the lenght of wire B . if the resistance of the wire A is 24 ohm , the resistances of wire B will be

• 96 ohm

• 12 ohm

• 48 ohm

• 4 ohm