Give scientific reasons:
Parallel combination of resistances decreases the effective resistance of the circuit.

A series combination of resistances is used to increase the resistance of a circuit.

Find the total resistance in the circuit.

Give scientific reasons: Water is a compound

Give scientific reasons: Air is a mixture

Give scientific reasons : Water is life.

Solve the cross-word. Across 2. A combination of resistances that reduces effective resistance of the circuit. 4. It is the rate of flow of charge. 6. Substance which does not allow current to flow through it. Down: 1. Combination of resistances in. which current flowing through all resistances is same. 3. Ratio of potential difference and current. 5. It is used to protect domestic appliances.

Give scientific reasons: Milk is a colloid.

Give scientific reasons: Hydrogen is an element.

Find the effective resistance between A and B.

Find the effective resistance between A and B.