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There are 4 defective bulbs in a pack of 20 bulbs. Then find the probability of drawing 1 defective bulb when 2 bulbs are drawn together.

Four bulbs are connected as shown to a battery of EMF 220 V. The voltage and power rating of the bulbs are : Bulb 1 : 220 V, 100 W Bulb 2 : 220 V, 50 W Bulb 3 : 440 V, 400 W Bulb 4 : 440 V, 200 W Choose the correct choice(s)

If the current passing through a bulb is 0.2 A and the power of the bulb is 20 W , find the voltage applied across the bulb.

An electric bulb consumes 7.2 kJ of electrical energy in 2 minutes. What is the power of the electric bulb?

The bulbs produced in a factory are supposed to contain 5% defective bulbs . What is the probability that a sample of 10 bulbs will contain not more than 2 defective bulbs?

An electric bulbs draws 1.2 A current at 6.0 V . Find the resistance of the bulb.

From a lot of 10 bulbs,which includes 3 defectives,a sample of 2 bulbs is drawn at random.Find the probability distribution of the number of defective bulbs.

From a lot f10 bulbs,which includes 3 detectives,a sample of 2 bulbs is drawn at random.Find the probability distribution of the number of defective bulbs.

The resistance of an electric bulb drawing 1.2 A current at 6 V will be

Two identical bulbs are conneted in parallel across an ideal source of emf E . The ammeter A voltmeter V are ideal . If bulb B_(2) gets fused , then .