# Determination of equivalent resistance of two resistors when connected in parallel

Aim To determine the equivalent resistance of two resistors when connected in parallel. Materials Required Two resistors A battery eliminator Ammeter Plug key Connecting wires A piece of sandpaper Voltmeter Rheostat Theory When two or more resistors are connected together between two points then they are said to be connected in parallel. In parallel combination, […]

# Determination of equivalent resistance of two resistors when connected in series

Aim To determine the equivalent resistance of two resistors when connected in series. Materials Required Two resistors A battery eliminator Ammeter Plug key Connecting wires A piece of sandpaper Voltmeter Rheostat Theory When two or more resistors are connected end to end to each other, then they are said to be connected in series. In […]

# Determination of the focal length of Convex lens by obtaining the image of a distant object

Aim To determine the focal length of a convex lens by obtaining the image of a distant object. Apparatus Required Convex lens A meter scale A screen A lens holder A screen holder Theory For an object placed at infinity (practically a distant object), the image formed by a convex lens lies at the focus […]

# Determination of the focal length of Concave mirror by obtaining the image of a distant object

Aim To determine the focal length of a concave mirror by obtaining the image of a distant object. Apparatus Required Concave mirror A meter scale A screen A mirror holder A screen holder Theory A concave mirror is defined as the spherical mirror whose reflecting surface is curved inwards and follows laws of reflection of […]

# To study the dependence of current on the potential difference with graph

Aim To study the dependence of current (I) on the potential difference (V) across a resistor and determine its resistance. Also plot a graph between V and I. Materials Required Battery eliminator Ammeter Voltmeter Rheostat One way plug key Resistor Connecting wires Theory Ohm’s Law: At constant temperature, the potential difference (V) across a conductor […]