A.  rheostat

        B.  thermostat

        C.  galvanometer

        D.  ammeter

        A.  the potentiometer wire is assumed to be uniform

        B.  it does not draw current from the circuit under test

        C.  the temperature of the wire must remain constant

        D.  faults may arise due to breaks or wrong connections in the circuit

        A.  key should be removed between readings to avoid battery run­down

        B.  jockeys should be dragged on resistance wires

        C.  the connections in the circuit should be tight

        D.  readings should be recorded as soon as they are obtained

        A.  It is a constant current instrument

        B.  It is a resistor with moving contact

        C.  It is used for varying the current in a circuit

        D.  It is used for varying the resistance in a circuit

        A.  resistivity

        B.  conductivity

        C.  resistance

        D.  conductance

        A.  potential difference varies

        B.  current remains constant

        C.  temperature remains constant

        D.  potential difference remains constant

        A.  concave

        B.  converging

        C.  planconcave

        D.  diverging

        A.  planoconvex lens should have small focal length

        B.  parallax error should be avoided

        C.  the surface of the lens should be cleaned properly

        D.  the tip of the optical pin should be at the same level with the principal axis of the lens

        A.  1.61

        B.  1.20

        C.  1.52

        D.  1.41

        A.  the principal focus is positive

        B.  the principal focus is ngative

        C.  they produce virtual images only

        D.  they form virtual, erect and smaller images of real object

You can now use you matric number to login as your username and  password in a lowercase.

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