1991 - JAMB Physics Past Questions and Answers - page 4
An insulated rod when rubbed with a material acquires
The function of the system of granulated carbon mixed with manganese (IV) oxide in a Letanche cell is to
A moving coil galvanometer of 300(\Omega) resistance gives full scale deflection for 1.0mA. The resistance R, of the shunt that is required to convert the galvanometer into a 3.0A ammeter is
Which of the following obeys Ohm's Law?
An equipment whose power is 1500W and resistance is 375 ohms would draw a current of
To convert an alternating current dynamo into a direct current dynamo, the
If a current carrying coil is mounted on a metal frame, the back e.m.f. induced in the coil causes
The electrochemical equivalent of platinum is 5.0 x 10-7kgC-1 to plate-out 1.0kg of platinum, a current of 100A must be passed through an appropriate vessel for
which of the following statements are TRUE of isotopes? i. isotopes of an element have the same chemical properties because they have the same number of electrons. ii. isotopes of elements are normally separated using physical properties. iii. isotopes of an element have the same number of protons in their nuclei.
When an atom loses or gains a charge, it becomes