Aim To study the variation in potential drop with length of a wire for a steady current. Apparatus and Material Required Principle If a steady current is flowing through a wire with uniform cross section and constant resistance per unit length, potential drop \(V\) across two points of the wire is directly proportional to the length…
Assemble the Electrical Components – Activity to be done by Class 12 Physics Students Aim To assemble the components of a given electrical circuit. Apparatus and Material Required Resistor, ammeter, (0-1.5A) voltmeter (0-5V ), battery, one way key, rheostat, sand paper, connecting wires. Procedure Results The components of the electrical circuit were assembled. Precautions Discussion Draw…
Aim To assemble a household circuit comprising three bulbs, three (on/off) switches, a fuse and a power source. Apparatus and Material Required Three bulbs (12 W, 220 V each), three (on/off) switches, socket, a fuse of 1.0 A, plug, flexible connecting wire, main switch. Principle If \(P_1\), \(P_2\), \(P_3\), \(P_4\), \(P_5\), … \(P_n\) be the power…
Aim To verify the laws of combination of resistances (series and parallel) using a metre bridge. Apparatus and Material Required Principle When two resistances \(R_1\) and \(R_2\) are connected in series, the resistance of the combination \(R_S\) is given by \[R_S = R_1 + R_2\] When these two resistances are connected in parallel, the resistance of…
Aim To find resistance of a given standard resistor using metre bridge. Apparatus and Material Required Description of the Apparatus Meter BridgeMeter bridge consists of one-meter-long constantan wire with uniform cross-sectional area and three thick metal strips, two bent at ninety-degree angles. Mounted on a wooden board marked with a scale, these components create a setup…
Aim To determine resistivity of two wires by plotting a graph for potential difference versus current. Apparatus and Material Required Principle According to Ohm’s Law, the current passing through a conductor is directly proportional to the voltage applied across it, as long as the conductor’s temperature and other physical properties remain constant. If I be the…
Production of Sound Propagation of Sound Properties of Vibrations Properties of Sound Sound and Human Sound and Health
Definition of Friction: Types of Friction: Comparison of Friction Types: Static friction > Sliding friction > Rolling friction Causes of Friction: Factors Affecting Friction: Advantages of Friction: Disadvantages of Friction: Ways to Increase Friction: Ways to Reduce Friction: Drag or Fluid Friction:
Force Definition: A push or pull acting on a body which tends to change its state of rest or motion. Types: Effects of Force: Unit of Force Resultant Force Balanced and Unbalanced Force Types of Forces Pressure Definition: Force acting on a unit area. \[\text {Pressure} = \frac {Force}{Area}\] Unit: Pascal (\(\text{Pa}\)), also called newton…
Frequently Asked Questions (FAQs) on Motion Q1: What is motion? Ans: Motion is the change in an object’s position with time. It can be observed directly, such as a car moving, or inferred indirectly, like the movement of dust particles indicating air motion. Q2: How can we describe the position of an object? Ans: The…