Αποτελέσματα Αναζήτησης
The current balance is used to measure the force of repulsion between identical, oppositely di- rected, currents in parallel conductors. In this experiment you will:
The current balance 1. INTRODUCTION This fundamental experiment denes the unit of electric current: the Ampere. The French physicist Andre Marie Ampere (1777-1863) showed that two parallel currents attract each other if the currents are in the same direction and repel each other if the currents are in opposite directions.
Figure 1: The current balance setup. Experiment. In this experiment you will use a current balance in which the upper conductor is free to pivot on knife edges. The upper conductor is balanced so that the wires are a small distance apart.
Physics 215 - Experiment 12 The Current Balance 62 Advance Reading Urone- (Chapter-section) 21-3, 21-4 and 21-7. Objective: The objective of this experiment is to measure the effects of a magnetic field on a current carrying conductor. Theory: A magnetic field exerts a force, FFB, on a moving charge. The magnitude of FFB is:
The force acting on a current-carrying conductor loop in a uniform magnetic field (Lorentz force) is measured with a balance. Conductor loops of various sizes are suspended in turn from the balance, and the Lorentz force is determined as a function of the current and magnetic induction.
The time average force between two parallel conductors carrying an alternating current is measured by balancing this force against the gravitational force on a set of known masses. The relationship between the time-average force and the root-mean-square current is inves-tigated using several methods of analysis. I. INTRODUCTION.
CURRENT BALANCE Introduction: In this lab, we balance a known gravitational force against the repulsive magnetic force between antiparallel currents. We use our results to calculate an experi- mental value for µ0, the permeability of free space. You may ignore errors for this lab.
