Chapter 6: Electrical Circuits & Electric Currents - Science Mcqs for Grade 7


Q.  The magnetic compass was invented during Han dynasty in China, in

a. 602 BC
b. 206 BC
c. 216 BC
d. 612 BC


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  The slowing down of electrons depends upon
Category: Science Mcqs,   Published by: teswesm
MCQs:  When water is electrolyzed, the gas collected at cathode, is
Category: Science Mcqs,   Published by: teswesm
MCQs:  For protection of electrical appliances
Category: Science Mcqs,   Published by: teswesm
MCQs:  The resistors that have set resistance, are known as
Category: Science Mcqs,   Published by: teswesm
MCQs:  If temperature rises very high, it can be used in
Category: Science Mcqs,   Published by: teswesm
MCQs:  The first thing on which the amount of consumed energy depends, is
Category: Science Mcqs,   Published by: teswesm
MCQs:  An example in which light emitting diodes are used, is
Category: Science Mcqs,   Published by: teswesm
MCQs:  Against resistance when electric current is forced through a conductor, electrons collide with the atoms of conductor which make them
Category: Science Mcqs,   Published by: teswesm
MCQs:  The energy which is used to push electrons towards the positive terminal is known as
Category: Science Mcqs,   Published by: teswesm
MCQs:  A simple enclosed length of wire that has a low melting point is known as
Category: Science Mcqs,   Published by: teswesm
MCQs:  Current conducting path through wires, bulb and battery is known as
Category: Science Mcqs,   Published by: teswesm
MCQs:  The relationship between magnetism and electricity was discovered in
Category: Science Mcqs,   Published by: teswesm
MCQs:  The positive electrode of the electrolytic cell is known as
Category: Science Mcqs,   Published by: teswesm
MCQs:  Electroplating is used to coat less expensive metals with
Category: Science Mcqs,   Published by: teswesm
MCQs:  Semiconductors are also found in
Category: Science Mcqs,   Published by: teswesm
MCQs:  Adding more bulbs to a circuit with one battery would
Category: Science Mcqs,   Published by: teswesm
MCQs:  Nichrome (mixture of nickel and chromium) resists
Category: Science Mcqs,   Published by: teswesm
MCQs:  In parallel circuits, the voltage is
Category: Science Mcqs,   Published by: teswesm
MCQs:  Friction can cause transfer of
Category: Science Mcqs,   Published by: teswesm
MCQs:  A doorbell and electric bell use
Category: Science Mcqs,   Published by: teswesm