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ELECTRIC AND DIRECT CURRENT (materials in direct current (superconductor,…
ELECTRIC AND DIRECT CURRENT
based on basic formula
V=IR
electromotive force(emf)
internal resistance
types of electric combination
series
R(total)=R1+R2+R3+RN
parallel
R(total)=1/R1+1/R2+1/R3+1/RN
Types of electrical devices
voltmeter
used to measure voltage in the circuit
ammeter
used to measure current in the circuit
potentiometer
used to measure either voltage,current or resistance in the circuit
materials in direct current
superconductor
semiconductor
conductor
insulator