electricity

• The voltage across each component in a parallel circuit is the same.
• The current is the flow of electrons through a conductor.
• In a parallel circuit, only the faulty component is affected when there is a problem.
• In a series circuit, if one bulb blows or one switch is turned off, all components are affected.
• Current can be measured using an ammeter, which has low resistance to avoid affecting the current being measured.
• Ammeter readings are always positive because it measures the direction of electron flow.
• Electricity flows from high potential difference (voltage) to low potential difference (voltage).
• A fuse or circuit breaker protects electrical circuits by breaking the circuit if too much current flows.
• A fuse is used to protect electrical circuits from overloading by melting and breaking the circuit if too much current flows.
• Voltage can be measured using a voltmeter, which has high resistance to prevent it from drawing any current.
• The voltage across two points on a circuit is equal to the energy transferred per unit charge between those two points.
• Ohms law states that the potential difference (voltage) across a resistor is directly proportional to the current flowing through it.
• Voltage is measured with a voltmeter, which has high resistance so as not to affect the circuit's current.
• Ohms law states that voltage = current x resistance (V=IR).
• Potential difference is measured in volts (V), where 1 V equals 1 joule/coulomb.
• The symbol for voltage is V.
• Resistance is the opposition to the flow of electrons in a material.
• Current is the rate at which charge passes through a point in a circuit.
• Metals are good conductors because they contain free electrons that can move around when a potential difference is applied.
• Resistance is measured in ohms (Ω), where 1 Ω equals 1 volt/ampere.
• Charge is measured in coulombs (C).
• Insulators have no free electrons, so there is little movement of charges when a potential difference is applied.
• Semiconductors have some free electrons but not enough to be considered metals.
• Increasing temperature increases the number of free electrons available to carry an electric current.
• Ohm's law states that current is directly proportional to potential difference, with resistance as the constant of proportionality.
• Increasing the length or cross-sectional area of a wire increases its resistance.
• Electric current is measured in amperes (A) or amps, with one amp being equal to one coulomb per second.
• Potential difference is measured in volts (V).
• Power is measured in watts (W).
• A series circuit has only one pathway for current to follow.
• Resistance is measured in ohms (Ω), where one ohm equals one volt per ampere.
• Resistance can also depend on factors such as temperature and material properties.
• Resistance is measured in ohms (Ω).
• The formula for calculating power is P = IV, where P is power, V is voltage, and I is current.
• The equation for power is P = IV.
• The equation for energy is E = VQ.
• Current remains the same throughout a series circuit.
• Total power dissipated by components in a series circuit equals the power supplied by the source.
• power= current squared x resistance (P = I^2 x R)
• Power can be calculated using the formula P = VI or P = I^2R