When the current through a solenoid increases at a constant rate, the induced current:.

Please find the answer in the explanation

Explanation:

Whenever electric current passes through solenoid, there will always be an induced current from the solenoid in the opposite direction to the current passing through the solenoid.

Therefore, When the current through a solenoid increases at a constant rate, the induced current in the solenoid will be constant but always in the opposite direction to the increasing current passing through the solenoid.

answer: the correct answer is 1.

explanation: there are various process in which a radioactive nuclei decays:

1) alpha decay: in this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. the mass number is reduced by 4 units.

2) electron capture: in this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. simply, a proton and an electron combines together to form a neutron. mass number does not change in this process.

3) gamma ray emission: it is a decay process in which an unstable nuclei gives excess energy by a spontaneous electromagnetic process. this decay releases . this process does not change the mass number.

4) positron emission: it is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. this is also known as -decay. in this the mass number remains same.

from the above information, we see that only alpha-decay is producing a change in the mass number of the nucleus.

think its the third option